JP2924149B2 - Oil burning equipment - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a vaporized oil burning device.

2. Description of the Related Art Conventionally, in this type of oil combustion apparatus, as shown in FIG. 2, a heater 22 is built in a vaporization cylinder 21 and is internally partitioned by a vaporization cylinder lid 23 and a burner head base 24 to form a vaporization chamber 25 and A mixing chamber 26 is formed, and a heat receiving wall 27 is provided at the upper end.
Is provided. A vaporizing air port 28 opens to the vaporizing chamber 25, a vaporizing air pipe 29 is connected, and an oil feed nozzle 31 connected to a pump 30 opens. Vaporization cylinder of mixing chamber 26
A bypass air port 32 is opened on the side wall 21, and a bypass air chamber 34 to which a bypass air pipe 33 is connected is provided outside the bypass air port 32. A burner head 35 is provided above the burner head base 24, and includes a vaporized air pipe 29 and a bypass air pipe 33.
Is connected to a combustion fan 36.

In the above configuration, when the heater 22 is energized and the vaporizing cylinder 21 is heated to a predetermined temperature, the combustion fan 36 operates and vaporized air flows into the vaporizing chamber 25 from the vaporized air port 28 via the vaporized air pipe 29, Fuel is supplied from the oil supply nozzle 31 by the pump 30 and vaporized. At this time, since only a small amount of vaporized air is supplied to the vaporizing chamber 25, local cooling of the vaporized surface in the vaporizing chamber 25 is prevented. The fuel that has become the vaporized gas mixes with the vaporized air to become a rich premixed gas, and flows into the mixing chamber 26 via the vaporizing cylinder lid 23. On the other hand, the bypass air flows into the mixing chamber 26 through the bypass air pipe 33, the bypass air chamber 34, and the bypass air port 32, and mixes with the rich premixed air from the vaporization chamber 25 to become the optimum air-fuel mixture for combustion. The fuel is ejected from the burner head 35 via the head base 24, and is ignited by an igniter (not shown) and burns. When the combustion is started, the heat receiving wall 27 receives the heat of combustion, and reduces the amount of electricity supplied to the heater 22 to reduce the electricity bill during combustion.

Problems to be Solved by the Invention In such a conventional petroleum combustion apparatus, a heat receiving wall 27 for receiving heat of combustion and a vaporizing chamber 25 for vaporizing fuel are separated from each other by a mixing chamber 26 therebetween. In addition, there is a problem that the temperature difference between the heat receiving wall 27 and the side wall of the vaporization cylinder 21 increases due to the cooling by the bypass air. Therefore the cylinder
There is a problem that if the side wall 21 is to be maintained at an optimum temperature for fuel vaporization, the temperature of the heat receiving wall 27 exceeds the allowable temperature limit. Further, the vaporizing cylinder 21 becomes large due to the configuration of the vaporizing chamber 25, the mixing chamber 26, and the heat receiving wall 27, and has a problem that the heating time by the heater 22, that is, the preheating waiting time becomes long.
Furthermore, since the bypass air is heated when passing through the bypass air port 32 and flows into the mixing chamber 26 as high-temperature air, the air-fuel mixture ejected from the burner head 35 also has a high temperature, and the burner head 35
There was a problem that the combustion flame in 35 easily flashed back.

The present invention solves the above-described problem, while reducing the temperature difference between the heat receiving wall and the vaporizing portion when receiving heat by the combustion flame while preventing local cooling of the vaporizing surface, and reducing the preheating waiting time for heating the heater. An object of the present invention is to prevent a flashback of a combustion flame from a burner head.

Means for Solving the Problems In order to achieve the above object, the present invention provides a vaporizer in which a vaporizing chamber having a vaporizing surface is formed inside and a heat receiving fin is arranged in close proximity to the vaporizing surface. A mixing vessel having a mixing chamber formed therein and a mixing chamber formed therein, a burner head connected to the mixing vessel and disposed below the heat receiving fins, a combustion fan for supplying combustion air, and combustion air; And a bypass air pipe leading to the mixing chamber.

Effect of the Invention According to the present invention, the combustion heat recovered by the heat receiving fins is quickly transmitted to the vaporizing surface by the above configuration, so that the temperature difference between the heat receiving fins and the vaporizing surface is extremely reduced, and the shape of the vaporizer is reduced, so that the heater is heated. Pre-heating waiting time is reduced. Also, since only the vaporized air that is a part of the combustion air is supplied to the vaporizing chamber, local cooling of the vaporizing surface is prevented, and the bypass air is directly supplied to the mixing chamber without passing through the vaporizing chamber. The mixture is cooled to prevent flashback of the combustion flame from the burner head.

Embodiments Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

In FIG. 1, reference numeral 1 denotes a vaporizer in which a heater 2 is embedded, and a vaporizer chamber 5 having a vaporizing surface 4 therein is defined by a vaporizer lid 3. An air-fuel mixture port 6 is opened at a lower portion of the vaporizer 1, and a heat receiving fin 7 is provided on a side surface of the vaporizer 1 and on a back surface of the vaporizing surface 4. A vaporizing air port 8 and a refueling nozzle 9 are opened in the vaporizer lid 3. The vaporizing air port 8 is connected to a combustion fan 11 via an intake pipe 10, and the refueling nozzle 9 is connected to a refueling pump via a refueling pipe 12. Connected to 13.
A mixing vessel 15 having a mixing chamber 14 formed therein is connected to the gas mixture port 6 and guides the mixture to a burner head 16 disposed below the heat receiving fins 7. In addition, the air supply pipe 10 and the mixing chamber 14
Are connected by a bypass air pipe 17.

In the above configuration, when the heater 2 is energized and the carburetor 1 rises to a predetermined temperature, the combustion fan 11 and the fuel pump
13 is operated, and a part of the combustion air and fuel are supplied to the vaporization chamber 5 through the intake pipe 10 and the supply port 8 and the supply pipe 12 and the supply nozzle 9. The supplied fuel is vaporized on the vaporizing surface 4 and mixed with a part of the combustion air to become a rich premixed gas, and flows into the mixing chamber 14 through the gas mixture port 6. The rich premixed gas that has flowed into the mixing chamber 14 mixes with the bypass air supplied from the bypass air pipe 17 to become a mixture having an optimum concentration for combustion. Ignited and burned. When the combustion is started, heat of combustion is recovered by the heat receiving fins 7 of the carburetor 1, and the carburetor 1 is maintained at a predetermined temperature while reducing the amount of electricity supplied to the heater 2.

At this time, since a part of the combustion air is supplied to the vaporizing chamber 5, local cooling on the vaporizing surface 4 is prevented, and the surface temperature of the vaporizing surface 4 is maintained at a high temperature, thereby preventing tar from being generated. You. Further, since the heat receiving fins 7 for recovering the combustion heat are disposed immediately behind the vaporizing surface 4, the temperature difference between the heat receiving fins 7 and the vaporizing surface 4 becomes small, so that not only a local high temperature portion is not generated. The size of the carburetor 1 is reduced because a special heat transfer unit for transferring the recovered combustion heat to the vaporization surface 4 is not required, and the heating time of the carburetor 1 by the heater 2, that is, the preheating waiting time is reduced. Will be shortened.

Further, the bypass air supplied to the mixing chamber 14 and mixed with the rich premixed gas from the vaporizer 1 is supplied directly from the air supply pipe 10, so that it is supplied without being heated by the vaporizer 1 and kept cool. Therefore, the pre-mixed gas mixed and generated in the mixing chamber 14 has a relatively low temperature, and flashback can be prevented during combustion in the burner head 16.

Effects of the Invention As is clear from the above description of the embodiment, the following effects can be obtained according to the oil combustion device of the present invention.

(1) Since the combustion air is divided and one is supplied to the vaporization chamber and the other is supplied directly to the mixing chamber without passing through the vaporizer, the local cooling of the vaporization surface is prevented and the generation of tar is prevented. The mixer is cooled by the bypass air directly supplied to the mixing chamber without being heated, and the flashback of the combustion flame from the burner head can be prevented.

(2) Since the heat receiving fins are provided close to the vaporizing surface and the burner head is disposed below the heat receiving fins, the combustion heat recovered by the heat receiving fins is quickly transmitted to the vaporizing surface. The temperature difference is extremely reduced, and the heat receiving fins are prevented from being locally heated to exceed the heat resistant temperature of the vaporizer material, and the shape of the vaporizer is reduced, and the preheating waiting time for heating the heater is reduced.

[Brief description of the drawings]

FIG. 1 is a sectional view of an essential part of an oil burning apparatus according to an embodiment of the present invention, and FIG. 2 is a sectional view of an essential part of a conventional oil burning apparatus. 1 ... vaporizer, 4 ... vaporization surface, 5 ... vaporization chamber, 6 ... mixed air port, 7 ... heat receiving fin, 8 ... vaporized air port, 14 ...
Mixing chamber, 15 Mixing container, 16 Burner head, 17
Bypass air pipe.

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-50-59841 (JP, A) JP-A 62-131217 (JP, U) JP-A 55-84419 (JP, U) (58) Investigation Field (Int.Cl. ⁶ , DB name) F23D 11/10 F23D 11/40 F23D 11/44

Claims (1)

(57) [Claims] 1. A vaporization chamber having a vaporization surface is formed therein.
A vaporizer in which the heat receiving fins are arranged in proximity to the vaporizing surface, a mixing container having a mixing chamber formed therein which is connected to a gas mixture port below the vaporizer, and a heat sink connected to the mixing container and the heat receiving fins. A burner head disposed below, a combustion fan for supplying combustion air, an intake pipe for dividing the combustion air and leading one to the vaporization chamber, and a bypass air pipe for guiding the other to the mixing chamber without passing through the vaporization chamber were formed. Oil burning equipment.